There are problems with impeaching Donald Trump. A big one is the holy terror waiting in the wings.

That would be Mike Pence, who mirrors the boss more than you realize. He’s also self-infatuated. Also a bigot. Also a liar. Also cruel.

To that brimming potpourri he adds two ingredients that Trump doesn’t genuinely possess: the conviction that he’s on a mission from God and a determination to mold the entire nation in the shape of his own faith, a regressive, repressive version of Christianity. Trade Trump for Pence and you go from kleptocracy to theocracy.

.. The book persuasively illustrates what an ineffectual congressman he was, apart from cozying up to the Koch brothers, Betsy DeVos and other rich Republican donors

.. the strong possibility that he wouldn’t have won re-election; his luck in being spared that humiliation by the summons from Trump, who needed an outwardly bland, intensely religious character witness to muffle his madness and launder his sins; and the alacrity with which he says whatever Trump needs him to regardless of the truth.

.. In Pence’s view, any bite marks in his tongue are divinely ordained. Trump wouldn’t be president if God didn’t want that; Pence wouldn’t be vice president if he weren’t supposed to sanctify Trump. And his obsequiousness is his own best route to the Oval Office, which may very well be God’s grand plan.

.. “I don’t think he’s as resilient, politically, as Bill Clinton was,” D’Antonio said. “He doesn’t relish a partisan fight in the same way. He loves to go to rallies where people adore him.”

There’s no deeply felt policy vision or sense of duty to sustain him through the investigations and accusations. “If the pain is great enough,” D’Antonio said, “I think he’d be disposed not to run again.”

.. It lays out his disregard for science, evident in his onetime insistence that smoking doesn’t cause cancer and a belief that alarms about climate change were “a secret effort to increase government control over people’s lives for some unstated diabolical purpose,” according to the book.

.. It suggests callousness at best toward African-Americans. As governor, Pence refused to pardon a black man who had spent almost a decade in prison for a crime that he clearly hadn’t committed. He alsoignored a crisis — similar to the one in Flint, Mich. — in which people in a poor, largely black Indiana city were exposed to dangerously high levels of lead. D’Antonio told me: “I think he’s just as driven by prejudice as Trump is.”

.. You can thank Pence for DeVos. They are longtime allies, going back decades, who bonded over such shared passions as making it O.K. for students to use government money, in the form of vouchers, at religious schools.

Pence cast the tiebreaking vote in the Senate to confirm her as education secretary.

.. Pence once spoke positively on the House floor about historical figures who “actually placed it beyond doubt that the offense of abortion was a capital offense, punishable even by death.” He seemed to back federal funds for anti-gay conversion therapy. He promoted a constitutional amendment to ban same-sex marriage.

“He is absolutely certain that his moral view should govern public policy,” D’Antonio told me.

.. Pence sees himself and fellow Christian warriors as a blessed but oppressed group, and his “hope for the future resided in his faith that, as chosen people, conservative evangelicals would eventually be served by a leader whom God would enable to defeat their enemies and create a Christian nation.”

.. Is America worse off with Trump or Pence?

“I have to say that I prefer Donald Trump, because I think that Trump is more obvious in his intent,” he said, while Pence tends to “disguise his agenda.”